Gnamptogenys alfaroi

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Gnamptogenys alfaroi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Gnamptogenys
Species: G. alfaroi
Binomial name
Gnamptogenys alfaroi
(Emery, 1894)

Gnamptogenys alfaroi P casent0179982.jpg

Gnamptogenys alfaroi D casent0179982.jpg

Specimen Label

Known from mountane rain forest.


A member of the alfaroi subgroup (in the mordax species group). This species is a striking member of the mordax group due to its elongated, almost cylindrical body. Its relationship with other members of the mordax group is not clear. Mandibular dorsum smooth and shining with some punctulae; metacoxal spine present; subpetiolar process anteriorly projected ; gastric tergum 2 with basal one-half longitudinally costulate, the rest smooth and shining; disk of pospetiolar sternum smooth and shining; body black; legs and antennae brown. It is rarely collected. (Lattke 1995)

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Colombia, Costa Rica (type locality), Ecuador, Nicaragua.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


Not much is known about the the biology of Gnamptogenys alfaroi. We can speculate that the biology of this species is similar to other species of the genus. Gnamptogenys are predatory ponerine ants that inhabit tropical and subtropical mesic forests. Nesting is typically at ground level in rotten wood or leaf litter. Some exceptions include species that are arboreal, a dry forest species and species that nests in sandy savannahs. Colony size tends to be, at most, in the hundreds. Queens are the reproductives in most species. Worker reproduction is known from a few species in Southeastern Asia. Generalist predation is the primary foraging/dietary strategy. Specialization on specific groups (millipedes, beetles, other ants) has developed in a few species.



The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • alfaroi. Ectatomma (Gnamptogenys) alfaroi Emery, 1894c: 145 (q.) COSTA RICA. Combination in Gnamptogenys: Brown, 1958g: 227. See also: Brown, 1958g: 301.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.